cargo-v5 0.12.1

Cargo tool for working with VEX V5 Rust projects
Documentation 
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use std::{path::PathBuf, str::FromStr};

use tokio::io::{AsyncWriteExt, stdout};
use vex_v5_serial::{
    Connection,
    commands::file::DownloadFile,
    protocol::{
        FixedString,
        cdc2::file::{FileTransferTarget, FileVendor},
    },
    serial::{SerialConnection, SerialError},
};

use crate::errors::CliError;

pub fn vendor_from_prefix(prefix: &str) -> FileVendor {
    match prefix {
        "user" | "/user" => FileVendor::User,
        "sys_" | "/sys_" => FileVendor::Sys,
        "rmsh" | "/rmsh" => FileVendor::Dev1,
        "pros" | "/pros" => FileVendor::Dev2,
        "mwrk" | "/mwrk" => FileVendor::Dev3,
        "deva" | "/deva" => FileVendor::Dev4,
        "devb" | "/devb" => FileVendor::Dev5,
        "devc" | "/devc" => FileVendor::Dev6,
        "vxvm" | "/vxvm" => FileVendor::VexVm,
        "vex_" | "/vex_" => FileVendor::Vex,
        _ => FileVendor::Undefined,
    }
}

pub async fn cat(connection: &mut SerialConnection, file: PathBuf) -> Result<(), CliError> {
    let vendor = if let Some(parent) = file.parent() {
        vendor_from_prefix(parent.to_str().unwrap())
    } else {
        FileVendor::Undefined
    };

    let file_name = FixedString::from_str(file.file_name().unwrap_or_default().to_str().unwrap())
        .map_err(|err| CliError::SerialError(SerialError::FixedStringSizeError(err)))?;

    stdout()
        .write_all(
            &connection
                .execute_command(DownloadFile {
                    file_name,
                    // This field just sets a cap on how many chunks the file transfer will
                    // return, so we just use the largest possible transfer size rather than
                    // the exact size of the file.
                    size: u32::MAX,
                    vendor,
                    target: FileTransferTarget::Qspi,
                    address: 0,
                    progress_callback: None,
                })
                .await?,
        )
        .await?;

    Ok(())
}